AUTOOL M518 · 3-IN-1 GASLESS MIG / MMA / LIFT TIG INVERTER
AUTOOL M518 180A IGBT Inverter Gasless MIG, MMA & Lift TIG Welding Machine
Ditch heavy gas bottles: weld automotive body panels, exhaust pipes, and steel frames with synergic Flux-Core MIG, or switch instantly to MMA stick and Lift TIG.
- Gasless MIG + MMA + TIG
- 30A–180A IGBT Power
- 220V · 1-Year Warranty
Engineered for Professional Workshop Demands
The AUTOOL M518 is built to deliver speed, accuracy, and durability in busy service bays.
Gasless Flux-Core MIG Technology
Uses self-shielded flux-core wire (E71T-GS) that generates its own protective gas shield during arc ignition—eliminating gas cylinders and wind blow-away.
Synergic IGBT Inverter & Auto Wire Speed
Advanced IGBT switching ensures a smooth, low-spatter arc while automatically adjusting wire feed speed as you turn the amperage dial.
Hot Start, Arc Force & Anti-Stick Protection
Built-in arc stabilizers prevent electrode sticking in MMA mode and deliver effortless arc striking on rusty or painted steel.
Internal Spool Feeder & Thermal Overload Guard
Houses a 1 kg wire spool internally with precision drive rollers, high-CFM fan cooling, and automatic over-temperature protection.
BUILT FOR AUTOMOTIVE BODY & EXHAUST REPAIR
Weld Thin Sheet Metal Without Burn-Through
Conventional stick welders blow holes through thin auto body panels and exhaust tubing. The M518 dials down to a gentle 30A in Flux-Core MIG mode for clean sheet-metal repairs.
- Rocker panels, floor pans, fenders, and chassis frame patching
- Exhaust mufflers, catalytic converter pipes, and hangers
- Supports 1.6mm–4.0mm electrodes in MMA mode for heavy steel brackets
PORTABLE GAS-FREE CONVENIENCE
Plug Into Any 220V Outlet and Weld Anywhere
Without a 50 kg gas cylinder chained to a cart, you can carry the lightweight M518 directly to the vehicle lift or outdoor jobsite.
- Zero gas cylinder rental, refill costs, or regulator leaks
- Bright digital LED meter shows exact welding current
- Compatible with 0.6mm, 0.8mm, 0.9mm, and 1.0mm flux-core wires
COMPLETE READY-TO-WELD PACKAGE
Includes MIG Torch, Electrode Holder & Flux-Core Wire
Start welding right out of the box with the included MIG gun, stick electrode lead, ground clamp, and starter spool of flux-core wire.
- Automatic over-current and over-temperature shutoff
- IP21S rated steel enclosure with top carry handle
- Backed by a 1-year official Otoeko warranty
Technical Specifications & Hardware Parameters
Complete manufacturer-verified technical data and operating ranges.
| Brand / Model | AUTOOL M518 IGBT Inverter Welder |
|---|---|
| Welding Processes | Gasless MIG (Flux-Core) / MMA (Stick) / Lift TIG |
| Input Voltage | AC 220V ±15% · 50/60 Hz (Single Phase) |
| Output Current Range | 30A – 180A Stepless Digital Control |
| MIG Wire Diameters | 0.6 mm / 0.8 mm / 0.9 mm / 1.0 mm Flux-Core (1 kg) |
| MMA Electrode Sizes | 1.6 mm / 2.5 mm / 3.2 mm / 4.0 mm |
| Inverter Type | High-Frequency IGBT + Synergic Wire Control |
|---|---|
| Arc Assist Features | Hot Start, Arc Force, Anti-Stick |
| Ingress & Insulation | IP21S Protection · Class F Insulation |
| Cooling System | Forced-Air Smart Fan + Thermal Overload Cutout |
| Display | High-Contrast Digital LED Amperage Meter |
| Warranty | 1 Year Official Otoeko Warranty |
Workshop Application & Operating Guide
Recommended 4-step standard operating procedure for accurate results.
Load Flux-Core Wire
Mount the 1 kg flux-core wire spool inside the side compartment and feed the wire through the drive roller into the MIG torch liner.
Attach Ground Clamp
Secure the heavy-duty earth clamp to clean metal on the workpiece and plug the unit into a 220V outlet.
Select Mode & Amperage
Choose MIG, MMA, or Lift TIG on the front panel and set current (30A–180A); wire speed adjusts automatically in MIG mode.
Weld & Brush Slag
Pull the torch trigger for smooth continuous welds, then brush off the light flux residue once cooled.
Conventional Methods vs. Professional Diagnostics
How precision engineering eliminates guesswork and comebacks.
Conventional / Basic Methods
- Traditional MIG welders require expensive, heavy shielding gas tanks
- Stick-only welders burn straight through thin car body panels
- Old transformer welders are bulky and suffer from unstable arcs
- Manual wire-speed tuning frustrates beginners and wastes time
With AUTOOL M518
- Welds anywhere without gas tanks using self-shielded flux-core wire
- Low 30A MIG output welds thin body panels and exhaust pipes cleanly
- Lightweight IGBT inverter delivers stable, low-spatter arc performance
- Synergic control automatically syncs wire feed speed to amperage
Package Contents — Ready for the Workshop
Complete factory kit inspected prior to dispatch.
- 1 × AUTOOL M518 180A IGBT Inverter Gasless MIG/MMA/TIG Welder
- 1 × Flux-Core MIG Welding Torch & Cable Assembly
- 1 × MMA Electrode Holder Lead & Earth Ground Clamp Lead
- 1 × Spool of Flux-Core Welding Wire, Chipping Hammer/Brush & User Manual
1 Year Official Otoeko Warranty
The AUTOOL M518 is backed by a 1 Year official Otoeko warranty against manufacturing defects, with full technical support.
Frequently Asked Questions
Key technical questions from technicians and workshops about the AUTOOL M518.
Do I need a CO2 or Argon gas cylinder for MIG welding?
No! The AUTOOL M518 is designed for Gasless Flux-Core MIG welding using self-shielded wire (E71T-GS), so no gas cylinder is needed.
Can it also weld with regular stick electrodes (MMA)?
Yes, simply connect the included electrode holder and switch the panel to MMA mode to burn 1.6mm–4.0mm stick electrodes.
Is it suitable for thin automotive body panels and exhaust pipes?
Yes, its 30A minimum current and 0.6mm–0.8mm wire support make it ideal for tacking and welding thin automotive sheet metal without burn-through.
Does it run on normal 220V single-phase power?
Yes, it plugs directly into standard 220V workshop outlets.
What size wire spool fits inside?
It accepts standard 1 kg (100mm diameter) spools of 0.6mm, 0.8mm, 0.9mm, or 1.0mm flux-core wire.
What is the warranty period?
It comes with a 1-year official Otoeko warranty.